quote ffmpeg params

MediaBrowser.Api/Playback/Progressive/VideoService.cs

@@ -153,7 +153,7 @@ namespace MediaBrowser.Api.Playback.Progressive
                 return args;
             }
 
-            var keyFrameArg = string.Format(" -force_key_frames expr:gte(t,n_forced*{0})",
+            var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"",
                 5.ToString(UsCulture));
 
             args += keyFrameArg;

MediaBrowser.MediaEncoding/Encoder/EncoderValidator.cs

@@ -87,6 +87,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
                 "h264_nvenc",
                 "h264_qsv",
                 "h264_omx",
+                "h264_vaapi",
                 "ac3"
             };
 

MediaBrowser.MediaEncoding/Encoder/VideoEncoder.cs

@@ -84,7 +84,7 @@ namespace MediaBrowser.MediaEncoding.Encoder
                 return args;
             }
 
-            var keyFrameArg = string.Format(" -force_key_frames expr:gte(t,n_forced*{0})",
+            var keyFrameArg = string.Format(" -force_key_frames \"expr:gte(t,n_forced*{0})\"",
                 5.ToString(UsCulture));
 
             args += keyFrameArg;

MediaBrowser.Server.Implementations/LiveTv/EmbyTV/EncodedRecorder.cs

@@ -191,7 +191,7 @@ namespace MediaBrowser.Server.Implementations.LiveTv.EmbyTV
             {
                 var maxBitrate = 25000000;
                 videoArgs = string.Format(
-                        "-codec:v:0 libx264 -force_key_frames expr:gte(t,n_forced*5) {0} -pix_fmt yuv420p -preset superfast -crf 23 -b:v {1} -maxrate {1} -bufsize ({1}*2) -vsync -1 -profile:v high -level 41",
+                        "-codec:v:0 libx264 -force_key_frames \"expr:gte(t,n_forced*5)\" {0} -pix_fmt yuv420p -preset superfast -crf 23 -b:v {1} -maxrate {1} -bufsize ({1}*2) -vsync -1 -profile:v high -level 41",
                         GetOutputSizeParam(),
                         maxBitrate.ToString(CultureInfo.InvariantCulture));
             }